package com.mask.common.core.utils;

import com.mask.common.core.constant.SecurityConstants;

import com.mask.common.core.model.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

/**
 * 安全服务工具类
 */
public class SecurityUtils {
    
    /**
     * 获取用户名
     */
    public static String getCurrentUsername() {
        try {
            return getLoginUser().getUsername();
        } catch (Exception e) {
            return "";
        }
    }

    /**
     * 获取用户ID
     */
    public static Long getCurrentUserId() {
        try {
            return getLoginUser().getUserId();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取部门ID
     */
    public static Long getCurrentDeptId() {
        try {
            return getLoginUser().getDeptId();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取登录用户信息
     */
    public static LoginUser getLoginUser() {
        try {
            org.springframework.security.core.Authentication authentication = getAuthentication();
            if (authentication == null) {
                return null;
            }
            Object principal = authentication.getPrincipal();
            if (principal instanceof LoginUser) {
                return (LoginUser) principal;
            }
            return null;
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     * 
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return SecurityConstants.ADMIN_ID.equals(userId);
    }
}